Supplement to Nature,' 

 December i, 1892 



Natu re 



A WEEKLY 



n^ 



ILLUSTRATED JOURNAL OF SCIENCE 



VOLUME XLVI 



MAY 1892 to OCTOBER 1892 



" To the solid ground 

 Of Nature trusts the mind which builds for aye" — Wordsworth 



1^1 



foitbon anb |Ul\j |)orh 

 MACMILLAN AND CO. 



